Booking Rules in Field Service is a vital capability that enables customers to automate more complex booking scenarios.  

One example scenario for a booking rule would be to check if a customer already has a scheduled booking in place before booking a second unscheduled work order.  If the rule finds a previous appointment, book the second appointment on the same day.

Unfortunately, booking rules work by calling a web resource in which the rule logic has been coded in Javascript.  An alternative where the booking rule calls a workflow Action still requires a significant amount of Javascript to reference the Action.  Almost non-existent online training means that booking rules can only be created and maintained by skilled developers, not business users.  This reduces the agility of the product, increases cost of ownership and lowers user satisfaction.

This suggestion is to replace the Booking Rule web resource with a WYSIWYG wizard (similar to that used for Business Rules) in order to enable business users to create and maintain Booking Rules without having to write code.